MiqCapacityController - remove dead send_button_changes
MiqCapacityController - remove dead send_button_changes

Seems like the whole method was copied from `MiqPolicyController`, only ever called from `miq_policy_controller/*.rb`
(transferred from ManageIQ/manageiq@2ec17a2eeb4ba98cd04c532ea7df897585ce56a2)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic